[Twisted-Python] RFC: IPv6 multicast join/ticket 6597

[Jason Litzinger]

> > +    def _joinAddrIPv6(self, interface, addr, join):
> > +        addr = socket.inet_pton(socket.AF_INET6, addr)
> > +        interface = socket.inet_pton(socket.AF_INET6, interface)
> > +        if join:
> > +            cmd = socket.IPV6_JOIN_GROUP
> > +        else:
> > +            cmd = socket.IPV6_LEAVE_GROUP
> > +        try:
> > +            self.socket.setsockopt(socket.IPPROTO_IPV6, cmd, addr + interface)
> > +        except socket.error as e:
> > +            return failure.Failure(error.MulticastJoinError(addr, interface, *e.args))
To make sure its out there, the above is completely wrong.  It happens
to work, but is wrong.  The argument to setsockopt for v6 is very
different from v4.  The above happens to work with "::" as the
interface, but is very very wrong.

-Jason